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Bus interface system with two separate data transfer interfaces

a data transfer interface and bus interface technology, applied in the field of bus controllers, can solve the problems of internal operations dependent on internal operations, the bandwidth available within the system has steadily eroded, and the development of faster bus standards has encountered limitations

Active Publication Date: 2005-09-06
AVAGO TECH INT SALES PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once such problem is the transfer of data within the information handling system itself.
Due to rapid advancements in processor speed, storage device access times, network speed, and the like, the bandwidth available within the system has steadily eroded.
However, development of faster bus standards has encountered some limitations, namely the dependency of the operations of internal buses to external buses.
Although attempts have been made at removing external bus dependence from internal interfaces, changes in external bus interfaces typically require redesign of numerous internal modules.

Method used

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  • Bus interface system with two separate data transfer interfaces
  • Bus interface system with two separate data transfer interfaces
  • Bus interface system with two separate data transfer interfaces

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exemplary embodiment 100

[0017]Referring now to FIG. 1, an exemplary embodiment 100 of the present invention is shown wherein an interface system includes a command queuing interface, data transfer interface and a command completion interface. Typically, bus interface controllers, such as controller cores and the like, have internal interfaces which are tightly tied to an external bus. The internal interfaces may require agents connecting to them to have knowledge of various external bus characteristics, such as disconnection points and byte alignment. Thus, previously, changes in external bus interfaces have required redesign of numerous internal modules. A bus interface of the present invention provides a generic interface that would not require an extensive redesign of numerous internal modules when utilizing a different bus interface controller, thereby greatly increasing the flexibility of the bus interface system.

[0018]For example, a bus interface system 100 may include a first bus interface controlle...

exemplary embodiment 400

[0033]Referring now to FIG. 4, an exemplary embodiment 400 of the present invention is shown wherein an interface system includes a command queuing interface, an inbound data transfer interface, an outbound data transfer interface and a command completion interface. As previously described, typically, bus interface controllers, such as controller cores and the like, have internal interfaces which are tightly tied to an external bus. A bus interface of the present invention provides a generic interface that would not require an extensive redesign of numerous internal modules when utilizing a different bus interface controller, thereby greatly increasing the flexibility of the bus interface system.

[0034]For example, a bus interface system 400 may include a bus interface controller, such as a PCI-X core 402 coupled to a back-end master device 404, such as a SCSI device, via an interface 406. The interface 406 includes a command queuing interface 408, an inbound data transfer interface ...

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Abstract

The present invention is directed to an interface. In an aspect of the present invention, an interface system suitable for coupling a bus interface controller with a back-end device includes a bus interface controller and a back-end device in which the back-end device is coupled to the bus interface controller via an interface. The interface includes a command queuing interface suitable for enqueueing a transaction, a command completion interface suitable for reporting transaction completion and a data transfer interface suitable for transferring data. The data transfer interface includes an inbound data transfer interface suitable for transferring data and an outbound data transfer interface suitable for transferring data. The inbound data transfer interface and the outbound data transfer interface are suitable for processing commands simultaneously.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present invention incorporates U.S. patent application Ser. No. 09 / 736,883, filed Dec. 14, 2000, titled “Interface for Bus Independent Core” by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention generally relates to the field of bus controllers, and particularly to an interface for a bus independent core.BACKGROUND OF THE INVENTION[0003]Information handling systems, such as desktop computers, servers, network appliances, and the like, are driving the expansion of the modern economy. Because information handling systems are performance driven, system throughput is vital for differentiating products, such as products that exchange massive amounts of information, both internally and externally, with storage devices, network interface cards, and the like. Therefore, increases in the ability to transfer data both within the system itself and transfer data over a network may afford competitive advantages for systems ...

Claims

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Application Information

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IPC IPC(8): G06F13/14G06F13/40
CPCG06F13/4031G06F2213/0024G06F2213/0036
Inventor SOLOMON, RICHARD L.
Owner AVAGO TECH INT SALES PTE LTD
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